JP6571049B2 - Parking brake device and tension detection unit - Google Patents

Description

  The present invention relates to a parking brake device and the like for operating and releasing a parking brake disposed in a vehicle via a cable by a turning operation of an operation lever.

  2. Description of the Related Art Conventionally, a parking brake device is configured to include a base member disposed on a vehicle body and an operation lever rotatably disposed on the base member, and the operation lever is rotated by a predetermined angle. Thus, the brake cable is pulled with an appropriate tension to apply a braking force to the vehicle. In such a parking brake device, it is important whether the brake cable is pulled with an appropriate tension and a sufficient braking force is exhibited.

  As an invention related to a parking brake device made in view of this point, for example, an invention described in Patent Document 1 is known. The retractable parking brake device described in Patent Document 1 has a tension detection unit for detecting an appropriate braking force from the tension of the cable, and the tension of the brake cable is the biasing force of the elastic member in the braking state. If it exceeds, the elastic member is compressed, and the microswitch is brought into a conductive state, thereby detecting that a predetermined tension or more is applied to the brake cable.

  Specifically, in the retractable parking brake device described in Patent Document 1, the tension detector includes an attachment frame provided with a micro switch, a switch pressing plate that moves according to the tension from the brake cable, and an attachment. A spring is provided between the frame and the switch pressing plate. The tension detection unit according to Patent Document 1 detects the tension of the brake cable by moving the switch pressing plate and contacting the switch button of the micro switch while compressing the spring by the tension from the brake cable.

JP 2006-182350 A

  Here, in the parking brake device, the function of applying a braking force to the vehicle via the cable in accordance with the turning operation of the operation lever is a basic and essential function. In other words, the configuration for detecting whether a proper braking force is applied from the tension of the cable as in the tension detection unit of Patent Document 1 is useful depending on the vehicle on which it is mounted, but is not necessarily a necessary function. .

  In this regard, in the retractable parking brake device described in Patent Document 1, each member (micro switch, mounting frame, switch pressing plate, spring, etc.) constituting the tension detection unit is configured to be a retractable parking brake device main body. Therefore, the tension detecting unit could not be easily detached from the apparatus main body. For this reason, in the invention described in Patent Document 1, it becomes a device that necessarily has a detection function related to the tension of the cable, and cannot meet the user's wishes regarding the necessity of the detection function. It was missing.

  In addition, in order to respond to the user's wishes regarding the necessity of the detection function related to the cable tension, the parking brake device having the detection function related to the cable tension and the operation lever can be rotated with respect to the base member. It is necessary to select one of the supported simple parking brake devices. In the case of a configuration in which the tension detection unit is integrally assembled as in Patent Document 1, the shape and the number of components of the parking brake device are greatly different from those of a simple parking brake device. As a result, the assembly work becomes complicated.

  The present invention relates to a parking brake device that operates and releases a parking brake via a cable by turning an operation lever, and can easily respond to a user's request regarding the presence or absence of a function of detecting the tension of the cable. A parking brake device is provided.

A parking brake device according to an aspect of the present invention includes a base member that is fixed to a vehicle body, and is pivotally supported with respect to the base member via a rotation shaft so as to rotate around the rotation shaft. A parking brake device having an operation lever that activates a braking device of the vehicle by pulling a cable in the case of the cable, and a tension detection unit that detects tension generated in the cable as the operation lever rotates. The tension detection unit has a switch mounting portion to which a detection switch for detecting the tension generated in the cable is mounted, and a first cable insertion hole inserted through the cable extending from the braking device, a first plate member removably attached at the first locking portion claw-like with respect to the rotation axis side of the operating lever, the first flop A second cable insertion hole that is inserted by the cable through which the cable member is inserted, and an operating portion that can contact the detection shaft of the detection switch disposed in the switch mounting portion. A relative distance between the second plate member that is slidably attached to the plate member, the switch attachment portion of the first plate member, and the operation portion of the second plate member is a predetermined value or less. And a detection switch that detects a tension generated in the cable based on the displacement of the detection shaft, and is disposed between the first plate member and the second plate member. And an elastic member that generates an urging force that resists the tension generated in the cable.

The parking brake device includes a base member and an operation lever. When the operation lever is rotated around the rotation axis, the vehicle braking device can be operated by pulling the cable. The parking brake device further includes a tension detection unit, and the tension detection unit is configured to detect the tension generated in the cable as the operation lever rotates. The tension detection unit includes a first plate member, a second plate member, a detection switch, and an elastic member. The tension of the elastic member is generated by the tension generated in the cable as the operation lever rotates. Against this, the relative distance between the first plate member and the second plate member is changed, and the tension generated in the cable is detected via the detection shaft of the detection switch. . In the parking brake device, the tension detection unit is configured by assembling the second plate member, the detection switch, and the elastic member with respect to the first plate member, and the first plate member is formed on the operation lever. It is detachably attached to the rotating shaft side. Therefore, according to the parking brake device, since the tension detection unit can be attached to and detached from the rotating shaft side of the operation lever via the first plate member, the presence / absence of the detection function related to the cable tension is determined. Can be easily changed. In other words, according to the parking brake device, by attaching / detaching the tension detection unit, it is possible to respond to the user's desire about whether or not the detection function related to the cable tension is necessary, thereby reducing the convenience and cost reduction of the parking brake device. Can contribute.

A parking brake device according to another aspect of the present invention is the parking brake device according to claim 1, wherein the first locking portion is opened on an upper surface of the operation lever on the rotating shaft side. It is inserted into the other locking hole.

  In the parking brake device, the first plate member is configured to insert the claw-shaped first locking portion into the locking hole opened in the upper surface of the operation lever on the rotating shaft side, thereby It is detachably fixed to the pivot shaft side of the lever. That is, according to the parking brake device, the first plate member and the first plate member can be obtained by performing a simple operation of inserting or removing the first locking portion with respect to the locking hole on the rotation shaft side of the operation lever. The tension detection unit can be attached and detached at a predetermined position. Thereby, according to the parking brake device, the workability at the time of assembling work of the tension detection unit and the like is improved, and at the same time, the user's desire about the necessity of the detection function related to the tension of the cable can be easily and quickly handled. This can contribute to the convenience and cost reduction of the parking brake device.

  A parking brake device according to another aspect of the present invention is the parking brake device according to claim 2, wherein the first plate member is located on the rotating shaft side of the operation lever on the first engagement. It has the 2nd latching | locking part latched with respect to a position different from a stop part, It is characterized by the above-mentioned.

  In the parking brake device, the first plate member includes a second locking portion in addition to the first locking portion, and the operation lever is configured by the first locking portion and the second locking portion. It is detachably fixed at two places including the upper surface on the rotating shaft side. That is, according to the parking brake device, since the first plate member is locked at two locations including the upper surface of the operation lever on the rotation shaft side, the first plate is opposed to the rotation shaft side of the operation lever. The member and the tension detection unit can be attached to a predetermined position with high accuracy, and the workability during the assembly work of the tension detection unit and the like can be improved.

  The parking brake device according to another aspect of the present invention is the parking brake device according to claim 2 or 3, wherein the first locking portion is inserted into the locking hole. The distal end portion has a retaining portion extending in a direction intersecting with the distal end portion.

  In the parking brake device, since the first plate member has a retaining portion at the tip of the first locking portion, the first plate member and the tension detecting unit are not inadvertently detached, and the cable A state having a detection function relating to tension can be maintained, and the intention of the user can be reflected.

  A parking brake device according to another aspect of the present invention is the parking brake device according to any one of claims 1 to 4, wherein the first cable insertion hole of the first plate member includes: A first cylindrical portion extending toward the second plate member is formed, and the second cable insertion hole of the second plate member extends toward the first plate member, and the first plate A second cylindrical portion having a diameter different from that of the first cylindrical portion of the member is formed.

  In the parking brake device, a first cylindrical portion is formed in the first cable insertion hole of the first plate member, and the second cable insertion hole of the second plate member has different diameters. Two cylindrical portions are formed. That is, in the parking brake device, by inserting the other cylindrical portion into one cylindrical portion of the first cylindrical portion of the first plate member and the second cylindrical portion of the second plate member, The first cable insertion hole and the first cylindrical portion in the first plate member can be aligned with the center of the second cable insertion hole and the second cylindrical portion in the second plate member. Can be increased. In addition, when the second plate member slides relative to the first plate member, the tip of one of the cylindrical portions can be brought into contact with the periphery of the cable insertion hole, so that the first plate member and the second plate It can prevent that the space | interval with a member becomes less than predetermined. According to the parking brake device, an excessive pressing load acts on the detection shaft of the detection switch by preventing the distance between the first plate member and the second plate member from becoming less than a predetermined value. Can be prevented, and failure of the detection switch can be suppressed.

  A parking brake device according to another aspect of the present invention is the parking brake device according to claim 5, wherein the first cylindrical portion or the second cylindrical portion includes a cylindrical portion formed in a cylindrical shape. A collar member having a flange portion protruding outward in the radial direction at the end of the cylindrical portion is disposed in the first cable insertion hole or the second cable insertion hole. Features.

  In the parking brake device, the first cylindrical portion or the second cylindrical portion is configured by arranging a collar member having a cylindrical portion and a flange portion in the first cable insertion hole or the second cable insertion hole. Therefore, when the second plate member slides relative to the first plate member, the tip of one of the cylindrical portions is brought into contact with the first cable insertion hole or the periphery of the second cable insertion hole. The load can be received at the periphery of the first cable insertion hole or the second cable insertion hole and the flange portion, and deformation at the periphery of the first cable insertion hole or the second cable insertion hole can be suppressed.

In addition, a tension detection unit according to one aspect of the present invention is supported by a base member fixed to a vehicle body so as to be rotatable with respect to the base member via a rotation shaft, and rotates around the rotation shaft. A tension lever that is disposed in a parking brake device having an operation lever that activates a braking device of the vehicle by pulling the cable when the cable is moved, and that detects a tension generated in the cable as the operation lever rotates. A detection unit, wherein the tension detection unit includes a switch attachment portion to which a detection switch for detecting a tension generated in the cable is attached, and a first cable insertion hole inserted by the cable extending from the braking device. , which has a, a first plate member removably attached at the first locking portion claw-like with respect to the rotation axis side of the operating lever, wherein A second cable insertion hole that is inserted by the cable that has passed through one plate member, and an operating portion that can contact the detection shaft of the detection switch disposed in the switch mounting portion. A relative distance between the second plate member that is slidably attached to the plate member, the switch attachment portion of the first plate member, and the operation portion of the second plate member is a predetermined value or less. And a detection switch that detects a tension generated in the cable based on the displacement of the detection shaft, and is disposed between the first plate member and the second plate member. And an elastic member that generates an urging force that resists the tension generated in the cable.

The tension detection unit is provided for a parking brake device having a base member and an operation lever, and detects the tension generated in the cable when the braking device of the vehicle is operated as the operation lever rotates. Can be detected. The tension detection unit includes a first plate member, a second plate member, a detection switch, and an elastic member. The tension member is attached to the cable by the tension generated in the cable as the operation lever rotates. It is configured to change the relative distance between the first plate member and the second plate member against the force and detect the tension generated in the cable via the detection shaft of the detection switch. . The tension detection unit is configured by assembling the second plate member, the detection switch, and the elastic member with respect to the first plate member, and the first plate member rotates the operation lever in the parking brake device. It is detachably attached to the shaft side. Therefore, according to the tension detection unit, since it can be attached to and detached from the rotation shaft side of the operation lever in the parking brake device via the first plate member, a detection function related to the tension of the cable can be easily added. can do. That is, according to the tension detection unit, the user's desire about the necessity of the detection function related to the tension of the cable can be dealt with by attaching / detaching the tension detection unit to / from the parking brake device.

A tension detection unit according to another aspect of the present invention is the tension detection unit according to claim 7, wherein the first locking portion is opened on an upper surface of the operation lever on the rotating shaft side. It is inserted into the other locking hole.

  In the tension detection unit, the first plate member is configured to insert the claw-shaped first locking portion into the locking hole opened on the upper surface of the operation lever on the rotating shaft side. It is detachably fixed to the pivot shaft side of the lever. That is, according to the tension detection unit, the first plate member and the first plate member can be obtained by performing a simple operation of inserting or removing the first locking portion with respect to the locking hole on the rotating shaft side of the operation lever. The tension detection unit can be attached to and detached from a predetermined position on the rotating shaft side of the operation lever. Thereby, according to the said tension | tensile_strength detection unit, while improving the workability | operativity at the time of the assembly | attachment operation | work with respect to a parking brake apparatus, it responds to a user's request about the necessity of the detection function regarding the tension | tensile_strength of a cable easily and rapidly. Can do.

The present invention includes a base member, an operation lever, and a tension detection unit. The tension detection unit is configured to detect tension generated in the cable as the operation lever rotates. Yes. The tension detection unit includes a first plate member, a second plate member, a detection switch, and an elastic member. The tension of the elastic member is generated by the tension generated in the cable as the operation lever rotates. Against this, the relative distance between the first plate member and the second plate member is changed, and the tension generated in the cable is detected via the detection shaft of the detection switch. The tension detection unit is configured by assembling a second plate member, a detection switch, and an elastic member with respect to the first plate member, and the first plate member can be attached to and detached from the rotating shaft side of the operation lever. It is attached. Therefore, since the tension detection unit can be attached to and detached from the rotating shaft side of the operation lever via the first plate member, it is possible to easily change the presence or absence of the detection function related to the cable tension.

1 is an external perspective view of a schematic configuration of a parking brake device according to a first embodiment. It is an external appearance perspective view which shows the back side structure of a parking brake apparatus. It is an external appearance perspective view which shows schematic structure of the tension | tensile_strength detection unit which concerns on 1st Embodiment. It is a disassembled perspective view of the tension | tensile_strength detection unit which concerns on 1st Embodiment. It is explanatory drawing regarding attachment of the tension | tensile_strength detection unit with respect to the operation lever rear part. It is an external appearance perspective view which shows schematic structure of the parking brake apparatus and tension | tensile_strength detection unit which concern on 2nd Embodiment.

(First embodiment)
Hereinafter, an embodiment (first embodiment) in which a parking brake device and a tension detection unit according to the present invention are applied to a parking brake device 1 having a tension detection unit 30 will be described in detail with reference to the drawings.

(Schematic configuration of parking brake device)
As shown in FIG. 1, the parking brake device 1 according to the first embodiment includes an operation lever 10 and a base member 20, and is rotatably disposed on a base member 20 fixed to the vehicle. The parking brake can be actuated and released via the brake cable C by rotating the operated lever 10 by the driver.

  In the following description, each direction is defined with reference to the parking brake device 1 disposed in the vehicle. That is, the floor side of the vehicle on which the base member 20 is fixed is the downward direction, and the opposite side is the upward direction. Moreover, as shown in each figure, the front-rear direction and the left-right direction of the vehicle on which the parking brake device 1 is disposed are defined as the front-rear direction and the left-right direction.

  The base member 20 is a substantially flat plate-like member fixed substantially perpendicularly to a vehicle floor (not shown), and the operation lever 10 is rotatably attached via a rotation shaft 25. That is, the base member 20 functions as a basic configuration in the parking brake device 1 according to the first embodiment, and the rotation shaft 25 functions as a rotation center related to the rotation of the operation lever 10.

  As shown in FIG. 1 and the like, in the parking brake device 1 according to the first embodiment, a tension detection unit 30 is detachably disposed on the rear portion of the operation lever 10. The tension detection unit 30 is a unit for detecting the tension generated in the brake cable C when the parking brake is operated / released, and corresponds to the tension detection unit in the present invention. A specific configuration of the tension detection unit 30 will be described later in detail.

(Basic configuration of parking brake device)
Next, a basic configuration of the parking brake device 1 according to the first embodiment will be described in detail with reference to the drawings. In the first embodiment, the configuration for operating and releasing the parking brake is the basic configuration of the parking brake device 1, and the configuration for detecting the tension of the brake cable C is not included in this configuration. To do.

  As described above, the operation lever 10 is a main component that is rotated by the driver in the parking brake device 1, and includes the grip portion 11 and the lever main body portion 12. The grip portion 11 is formed in a substantially cylindrical shape on one end side (front end portion side) of the operation lever 10 and is gripped by the driver when the operation lever 10 is rotated.

  And the lever main-body part 12 comprises the other end side (back end part) in the operation lever 10, and it uses the rotating shaft 25 as an axis | shaft with respect to the base member 20 standingly arranged by the floor of the vehicle. It is rotatably supported. One end of a brake cable C is connected to the lever main body 12, and the other end side of the brake cable C is connected to a parking brake mounted on the vehicle.

  The lever body 12 is formed with a first locking hole 13 and a second locking claw 14. The first locking holes 13 and the second locking claws 14 are used when a tension detection unit 30 described later is detachably attached to the operation lever 10. The first locking hole 13 is formed in the rear end portion on the upper surface of the lever main body 12, and the first locking claw 45 of the first plate member 40 constituting the tension detection unit 30 is locked ( (See FIGS. 2 and 5). The second locking claw 14 is formed to protrude from the rear end portion of the right side surface of the lever main body 12, and is inserted into the second locking hole 46 of the first plate member 40 constituting the tension detection unit 30. (See FIGS. 2 and 5).

  In the operation lever 10, a release rod having a release knob 15 disposed at the tip and a spring for biasing the release rod are accommodated inside the cylindrical grip portion 11. The release knob 15 is attached to the front end portion of the release rod, and is disposed so as to protrude from the front end surface of the operation lever 10 as shown in FIG. In the parking brake device 1, the release rod is slid by moving the release knob 15.

  Further, a component member such as a pole and a base member 20 including a ratchet are interposed inside the lever main body 12. The pole is located on the rear side inside the lever main body 12 of the operation lever 10 and is arranged to be swingable. The pole is connected to the rear end of the release rod and swings as the release rod slides. The pawl locking pawls abut against and separate from the ratchet teeth formed on the base member 20 as the pawl swings.

  The base member 20 has a pair of front and rear mounting legs 21 on the lower end side. The mounting leg 21 is bent so as to extend in the opposite direction and substantially horizontally to the main part of the base member 20 rising substantially vertically. And the attachment leg part 21 fulfill | performs the function which fixes the base member 20 to an installation site | part by bolting with respect to the installation site | part vicinity of a driver's seat.

  As shown in FIGS. 1 and 2, a cable holder 22 is formed on the front right side of the base member 20. The cable holder 22 holds the brake cable C connected to the lever main body 12 of the operation lever 10 and guides the movement of the brake cable C accompanying the turning operation of the operation lever 10.

  A ratchet is fixed to the main part of the base member 20. The ratchet has a plurality of teeth arranged in a line so as to draw an arc centered on the rotation shaft 25. The ratchet teeth are formed so that the locking claws formed at one end of the pole mesh with each other as the pole swings. In the parking brake device 1, the pawl claw meshes with the tooth portion of the ratchet, thereby restricting the rotation of the operation lever 10 about the rotation shaft 25 in the release direction. When the release knob 15 is pushed, the release rod slides backward and the pole swings to release the meshing of the ratchet teeth. Therefore, in this case, the operation lever 10 is allowed to rotate in the release direction, and the parking brake can be released via the brake cable C.

(Activation and release of parking brake)
The operation of each part when the parking brake is operated or when the parking brake is released will be described using the parking brake device 1 configured as described above.

  First, the case where the parking brake is operated and the braking force is applied to the vehicle will be described. In this case, the driver rotates the operation lever 10 in the parking brake device 1 in a direction that causes the operation lever 10 to move upward (hereinafter referred to as an operation direction). Specifically, the driver holds the grip portion 11 of the operation lever 10 and pulls it upward. As a result, the operation lever 10 rotates upward about the rotation shaft 25.

  As the operating lever 10 rotates in the operating direction, the brake cable C connected to the operating lever 10 is pulled, so that the parking brake connected to the other end of the brake cable C is operated and A braking force is applied.

  As the operation lever 10 rotates in the operating direction, the pole inside the lever main body 12 swings and sequentially passes over the teeth of the ratchet. Thereafter, when the rotation of the operation lever 10 in the operation direction is stopped, the pawl maintains the meshing with the tooth portion of the ratchet and restricts the rotation of the operation lever 10 in the release direction. Thus, by restricting the rotation of the operation lever 10, the state of the brake cable C is also maintained, and the operating state of the parking brake is maintained.

  Next, a case where the parking brake that is operating is released and the braking force acting on the vehicle is removed will be described. In this case, the driver performs the pushing operation of the release knob 15 while rotating the operating lever 10 once in the operation direction, and the operating lever 10 is moved downward (hereinafter, referred to as “removing knob 15”). Rotate in the release direction.

  When the pushing operation of the release knob 15 is performed while the operating lever 10 is rotated in the operating direction, the release rod slides to the rear side of the operating lever 10 against the biasing force of the spring. As a result, the pole swings, and the engagement between the pawl claw and the ratchet teeth is released. By being in this state, the operation lever 10 can be rotated in the release direction.

  As the operation lever 10 is turned in the release direction, the brake cable C connected to the operation lever 10 is loosened, so that the operation of the parking brake connected to the other end of the brake cable C is released, The braking force is removed.

(Specific configuration of the tension detection unit 30)
A specific configuration of the tension detection unit 30 according to the first embodiment will be described in detail with reference to FIGS. 3 and 4. The tension detection unit 30 is a unit for detecting the tension generated in the brake cable C in order to operate / release the parking brake. As shown in FIGS. 1 and 2, the rear end portion of the operation lever 10 is used. Is detachably attached.

  The tension detection unit 30 includes a first plate member 40, a second plate member 50, a coil spring 80, and a tension detection switch 90. One end of the brake cable C is connected to the tension detection unit 30. ing. The brake cable C is taken into the tension detection unit 30 from the front side of the first plate member 40, and is prevented from coming off at the end of the brake cable C after passing through the coil spring 80 and the second plate member 50. A member (not shown) is fixedly connected.

  When the tension detection unit 30 moves rearward in the parking brake device 1 due to the operation lever 10, the tension detection unit 30 is cooperated by the second plate member 50 to which the end of the brake cable C is connected and the coil spring 80. The second plate member 50 moves forward at, and the brake cable C is pulled backward. Thereby, in the said parking brake apparatus 1, the braking state which the braking force generate | occur | produced in the vehicle by the parking brake is brought about. The tension detection switch 90 detects the tension generated in the brake cable C as the position of the second plate member 50 with respect to the first plate member 40 of the tension detection unit 30 changes.

  As shown in FIG. 4, the first plate member 40 is made of a metal plate material, and includes a plate body portion 41, a switch mounting portion 44, a first locking claw 45, and a second locking hole 46. Have. The first plate member 40 constitutes a front portion of the tension detection unit 30 and is directly attached to the rear end portion of the operation lever 10. (See FIGS. 1 and 5).

  The plate body 41 is formed in a flat plate shape with a metal plate material, and constitutes a main part of the first plate member 40. The plate body 41 is attached to the rear end of the lever body 12 of the operation lever 10 so as to be substantially perpendicular. As shown in FIG. 4, the plate main body 41 is formed with a cable insertion hole 42, a slit 43, and a second locking hole 46.

  As shown in FIG. 4 and the like, a cable insertion hole 42 is formed in the upper part of the plate main body 41. A first collar member 60 is attached to the cable insertion hole 42 from the front side of the plate body 41. The first collar member 60 includes a cylindrical portion 61 having a cylindrical shape and a flange portion 62 that is formed so as to protrude radially outward from one end portion of the cylindrical portion 61. The inner diameter of the cable insertion hole 42 is formed with a larger diameter than the outer diameter of the cylindrical portion 61 in the first collar member 60.

  The first collar member 60 is attached by inserting the cylindrical portion 61 into the cable insertion hole 42 from the front side of the plate main body portion 41 and welding the flange portion 62 to the periphery of the cable insertion hole 42. Thereby, the cylindrical part 61 is arrange | positioned so that it may extend toward the 2nd plate member 50 side (vehicle rear side) along the opening edge of the cable penetration hole 42. FIG. The cylindrical portion 61 has an inner diameter that is larger than the outer diameter of the brake cable C. Accordingly, the brake cable C can be slidably inserted into the cable insertion hole 42 of the first plate member 40 and the cylindrical portion 61 of the first collar member 60.

  A slit 43 is formed on the right side of the cable insertion hole 42 in the plate main body 41. As shown in FIGS. 3 and 4, a plate guide piece 53 of a second plate member 50 described later is inserted into the slit 43. The slit 43 cooperates with the plate guide piece 53 of the second plate member 50 so that the second plate member 50 slides in a predetermined direction with respect to the first plate member 40 in accordance with the turning operation of the operation lever 10. Move. The switch mounting portion 44 is formed in the lower right portion of the plate main body portion 41, and the tension detection switch 90 constituting the tension detection unit 30 is mounted via the switch fixing member 93.

  As shown in FIGS. 4 and 5, the first locking claw 45 is formed at the upper left edge of the plate body 41 and cooperates with the first locking hole 13 formed on the upper surface of the lever body 12. By acting, the first plate member 40 is detachably fixed to the operation lever 10. The first locking claw 45 is formed to extend upward from the left upper end edge of the plate main body 41 and then extend downward slightly forward of the surface of the plate main body 41. Accordingly, the first locking member 45 can be caused to enter the first locking hole 13 from above by hooking the first plate member 40 on the rear end portion of the operation lever 10. Can be detachably attached to the rear end of the lever main body 12.

  The second locking hole 46 is formed on the lower right side of the cable insertion hole 42 in the plate main body 41, and the second locking claw 14 formed on the right side surface at the rear end of the lever main body 12. By collaborating, the first plate member 40 is detachably fixed to the operation lever 10. As shown in FIG. 5, the first plate member 40 includes a locking portion formed by the first locking claw 45 and the first locking hole 13, and a locking portion formed by the second locking hole 46 and the second locking claw 14. Are attached to the rear end portion of the operation lever 10, and can be attached to a predetermined position with respect to the operation lever 10 with high accuracy.

  As shown in FIG. 3, the second plate member 50 is attached to the first plate member 40 so as to be movable in the front-rear direction of the tension detection unit 30 while being inserted through the brake cable C. This is used when the tension of the brake cable C is detected by the tension detection switch 90 attached to the one plate member 40. The second plate member 50 is configured by performing a bending process or the like on the metal plate material, and includes a plate main body portion 51, a plate guide piece 53, and a bolt support portion 55.

  The plate body 51 is formed in a flat plate shape with a metal plate material, and constitutes a main part of the second plate member 50. The plate body 51 is disposed so as to be substantially parallel to the plate body 41 of the first plate member 40 when the second plate member 50 is attached to the first plate member 40.

  As shown in FIG. 4 and the like, a cable insertion hole 52 is formed in the plate body 51. The second collar member 70 is attached to the cable insertion hole 52 from the rear side of the plate main body 51. The second collar member 70 includes a cylindrical portion 71 having a cylindrical shape and a flange portion 72 formed so as to protrude radially outward from one end portion of the cylindrical portion 71. The inner diameter of the cable insertion hole 52 is formed with a larger diameter than the outer diameter of the cylindrical portion 71 in the second collar member 70.

  The second collar member 70 is attached by inserting the cylindrical portion 71 into the cable insertion hole 52 from the rear surface side of the plate body portion 51 and welding the flange portion 72 to the periphery of the cable insertion hole 52. Thereby, the cylindrical part 71 is arrange | positioned so that it may extend toward the 1st plate member 40 side (vehicle front side) along the opening edge of the cable penetration hole 52. FIG.

  The cylindrical portion 71 has an inner diameter that is larger than the outer diameter of the brake cable C and the outer diameter of the cylindrical portion 61, and a retaining member (not shown) fixed to the end of the brake cable C. Z)). As shown in FIG. 3 and the like, when the tension detection unit 30 is configured, the cylindrical portion 61 of the first collar member 60 and the brake cable C are inserted into the inside of the cylindrical portion 71 of the second collar member 70. Can do.

  Accordingly, the tension detection unit 30 can insert the brake cable C to a certain extent so as to be slidable. When the second plate member 50 and the like come into contact with the retaining member, the tension of the brake cable C is increased. The second plate member 50 can be acted on. That is, the second plate member 50 compresses the coil spring 80 in accordance with the tension from the brake cable C, opposes the biasing force of the coil spring 80, and detects the tension when the tension becomes larger than the biasing force. It can move toward the front side of the unit 30 (the tension detection switch 90 side).

  As shown in FIGS. 3 and 4, the plate guide piece 53 is formed at the right edge of the plate body 51, and protrudes forward by bending the metal plate material forward of the tension detection unit 30. Is formed. The plate guide piece 53 is assembled by being inserted through the slit 43 of the first plate member 40. Therefore, by causing the slit 43 and the plate guide piece 53 to cooperate, the sliding movement direction of the second plate member 50 relative to the first plate member 40 can be limited to a certain range.

  And the holding member 54 is attached to the front-end | tip of the plate guide piece 53 (refer FIG. 3). The holding member 54 is formed larger than the opening area of the slit 43, and is attached to the distal end portion of the plate guide piece 53 in a state where the slit 43 is inserted. Accordingly, the holding member 54 can limit the sliding movement amount of the second plate member 50 relative to the first plate member 40 to a predetermined range, and the tension detection unit 30 can be unitized.

  A bolt support portion 55 is formed on the lower right side of the plate main body portion 51 so as to be attachable to the operation bolt 56. The bolt support portion 55 is formed to face the switch mounting portion 44 when the second plate member 50 is assembled to the first plate member 40. Accordingly, the bolt support portion 55 can hold the operating bolt 56 so as to face the detection shaft 92 of the tension detection switch 90 fixed to the switch mounting portion 44.

  The operating bolt 56 is attached to the bolt support portion 55 using a nut 57 and a weld nut 58. By attaching the operating bolt 56 using the nut 57 and the weld nut 58, the mounting mode of the operating bolt 56 with respect to the bolt support portion 55 can be adjusted. Thereby, in addition to absorbing the difference in the attachment position of the tension detection switch 90 due to the difference in the vehicle type, the detection timing of the tension applied from the brake cable C to the second plate member 50 can be finely adjusted.

  The coil spring 80 is disposed between the first plate member 40 and the second plate member 50 and functions as an elastic member in the present invention. The coil spring 80 is formed with a winding diameter slightly larger than the outer diameter of the cylindrical portion 71 of the second collar member 70. Therefore, as shown in FIG. 4, the coil spring 80 is inserted through the cylindrical portion 71 fixed to the second plate member 50, the cylindrical portion 61 fixed to the first plate member 40, and the brake cable C. The coil spring 80 biases the second plate member 50 backward from the first plate member 40 between the first plate member 40 and the second plate member 50.

  The tension detection switch 90 is a mechanical switch (so-called push switch) for detecting the tension generated in the brake cable C, and includes a housing 91 and a detection shaft 92. In the tension detection switch 90, the detection shaft 92 is disposed so as to be displaceable with respect to the housing 91, and the relative distance between the first plate member 40 and the second plate member 50 due to the tension generated in the brake cable C. Is pressed by the operating bolt 56 when the value becomes equal to or less than a predetermined value.

  The tension detection switch 90 is fixed to the switch mounting portion 44 of the first plate member 40 via the switch fixing member 93 so that the detection shaft 92 faces the rear side of the tension detection unit 30. As shown in FIG. 3 and the like, by attaching in this way, the detection shaft 92 of the tension detection switch 90 faces the operating bolt 56 supported by the bolt support portion 55 of the second plate member 50.

(Attaching the tension detection unit to the rear of the lever body)
Next, an attaching operation when attaching the tension detecting unit 30 having the above-described configuration to the rear portion of the lever main body 12 in the operation lever 10 will be described with reference to the drawings.

  As described above, in the tension detection unit 30, the first collar member 60 is fixed to the peripheral edge of the cable insertion hole 42 of the first plate member 40 by welding or the like. The tension detection switch 90 is fixed via a switch fixing member 93. Therefore, the first plate member 40 is integrated with the first collar member 60 and the tension detection switch 90.

  On the other hand, the second collar member 70 is fixed to the periphery of the cable insertion hole 52 of the second plate member 50 by welding or the like, and the bolt support portion 55 is interposed via a nut 57 and a weld nut 58. An operating bolt 56 is attached. Therefore, the second plate member 50 is integrated with the second collar member 70 and the operating bolt 56.

  The coil spring 80 is disposed between the first plate member 40 and the second plate member 50 to which the constituent members are attached in this manner, and at the same time, the second plate member 50 is assembled to the first plate member 40. At this time, in a state where the cylindrical portion 61 of the first plate member 40 is inserted from the front end side of the coil spring 80 and the cylindrical portion 71 of the second plate member 50 is inserted from the rear end side of the coil spring 80, the slit 43 A holding member 54 is attached to the tip end of the plate guide piece 53 inserted through. Thereby, the relative positional relationship between the first plate member 40 and the second plate member 50 to which the constituent members are attached and the coil spring 80 is fixed, and the tension detection unit 30 can be unitized.

  Further, when inserted into the coil spring 80, the cylindrical portion 61 of the first plate member 40 is inserted into the cylindrical portion 71 of the second plate member 50. Thereby, about the cable insertion hole 42 of the 1st plate member 40, the cylindrical part 61 of the 1st color member 60, the cable insertion hole 52 of the 2nd plate member 50, and the cylindrical part 71 of the 2nd collar member 70, All axes can be easily aligned. Accordingly, the cable insertion hole 42 of the first plate member 40, the cylindrical portion 61 of the first collar member 60, the cable insertion hole 52 of the second plate member 50, the cylindrical portion 71 of the second collar member 70, and the coil The workability regarding the work of inserting the brake cable C into the spring 80 can be improved.

  And when attaching the tension | tensile_strength detection unit 30 unitized in this way to the rear-end part of the lever main-body part 12, with respect to the 2nd locking hole 46 of the 1st plate member 40 which comprises the tension | tensile_strength detection unit 30, The first locking claw 45 of the first plate member 40 is formed on the upper surface of the lever body 12 while the second locking claw 14 formed on the right side surface portion at the rear end of the lever body 12 is inserted. Hook the first locking hole 13 (see FIG. 5). According to the parking brake device 1, the tension detection unit 30 can be connected to the rear end of the lever main body 12 by a simple operation of locking by the first locking claw 45 and the like and locking by the second locking hole 46 and the like. It can be accurately attached to a predetermined position in the part.

  In addition, the first plate member 40 has a lever main body by cooperation of the first locking claw 45 and the first locking hole 13 and by cooperation of the second locking hole 46 and the second locking claw 14. It is accurately fixed at a predetermined position at the rear end of the portion 12. As described above, since the tension detection unit 30 is unitized, the positional relationship of other components of the tension detection unit 30 with respect to the first plate member 40 is also determined. That is, by fixing the first plate member 40 at a predetermined position at the rear end of the lever main body 12 with high accuracy, the tension detection unit 30 can be attached at a predetermined position at the rear end of the lever main body 12 with high accuracy. it can.

  The operation of removing the tension detection unit 30 from the rear part of the lever main body 12 will be described in detail with reference to the drawings. In this case, the operator attaches to the rear end of the lever main body 12 while pulling out the second locking claw 14 formed in the lever main body 12 from the second locking hole 46 of the tension detection unit 30. The tension detection unit 30 that is present is lifted. By lifting the tension detection unit 30, the first locking claw 45 comes out of the first locking hole 13, so that the locking by the first locking claw 45 etc. and the second locking hole 46 etc. Any of the locking can be released, and the tension detection unit 30 can be removed from the rear portion of the lever main body 12 with a simple operation.

(Operation of tension detection unit when parking brake is activated and released)
As described above, when the operation lever 10 is pulled up and rotated in the operation direction, the tension applied to the coil spring 80 by the brake cable C starts to increase. When the tension of the brake cable C exceeds the urging force of the coil spring 80, the coil spring 80 is compressed by the pull of the brake cable C, and the second plate member 50 is displaced forward. When the position of the second plate member 50 relative to the first plate member 40 moves to a predetermined position on the front side, the detection shaft 92 of the tension detection switch 90 is pressed by the operating bolt 56 attached to the second plate member 50. Is done. Thereby, since the contact of the tension detection switch 90 is in a conductive state, the tension detection unit 30 can detect the tension generated in the brake cable C.

  The timing at which the operation bolt 56 of the second plate member 50 starts to press the detection shaft 92 of the tension detection switch 90 can be adjusted by the screwing amount of the operation bolt 56 to the bolt support portion 55. The detection timing by the tension detection switch 90 can also be adjusted by the biasing force of the coil spring 80 that opposes the tension of the brake cable C. That is, the urging force of the coil spring 80 may be adjusted by selecting the cross-sectional shape, size, winding radius, number of turns, or pitch of the wire to be coiled. Further, it can be adjusted by the positional relationship of the tension detection switch 90 with respect to the switch mounting portion 44 of the first plate member 40.

  When the tension of the brake cable C greatly exceeds the urging force of the coil spring 80 and the coil spring 80 is compressed, the distance between the first plate member 40 and the second plate member 50 is further reduced. At this time, in the coil spring 80, the end portion of the cylindrical portion 71 contacts the plate main body portion 41 that forms the periphery of the cable insertion hole 42. The forward movement of the second plate member 50 with respect to the first plate member 40 is restricted by the cylindrical portion 71 by the contact between the tip of the cylindrical portion 71 and the plate main body portion 41 of the first plate member 40.

  Since the distance between the first plate member 40 and the second plate member 50 is regulated, the positions of the tension detection switch 90 attached to the first plate member 40 and the operating bolt 56 supported by the second plate member 50 Relationships are also regulated. That is, even when the tension of the brake cable C greatly exceeds the urging force of the coil spring 80, the detection shaft 92 of the tension detection switch 90 comes into contact with the operating bolt 56 of the second plate member 50, It is not pushed more than necessary, and damage or failure of the tension detection unit 30 including the tension detection switch 90 can be prevented.

  As described above, the flange portion 62 of the first collar member 60 is welded and fixed to the front side of the plate main body portion 41 at the periphery of the cable insertion hole 42. Therefore, when the tension of the brake cable C greatly exceeds the urging force of the coil spring 80, the load applied by the tip of the cylindrical portion 71 is applied not only to the plate main body portion 41 at the periphery of the cable insertion hole 42 but also to the first. It can be received by the flange portion 62 of the collar member 60. Thereby, the deformation | transformation of the plate main-body part 41 in the periphery of the cable penetration hole 42 can be suppressed, and damage and failure of the tension | tensile_strength detection unit 30 containing the tension | tensile_strength detection switch 90 can be prevented.

  When the operation lever 10 is lowered and rotated in the release direction, the tension applied to the coil spring 80 by the brake cable C decreases, so that the second plate member 50 is The first plate member 40 is displaced rearward. As a result, the operation bolt 56 in the second plate member 50 moves away from the detection shaft 92 of the tension detection switch 90, so that the tension detection unit 30 reduces the tension generated in the brake cable C to below a predetermined value. Can be detected.

  As described above, the parking brake device 1 according to the first embodiment includes the operation lever 10, the base member 20, and the tension detection unit 30, and rotates the operation lever 10 around the rotation shaft 25. When the vehicle is moved, the brake device of the vehicle is operated by pulling the brake cable C, and the tension detection unit 30 detects the tension generated in the brake cable C as the operation lever 10 rotates. Has been.

  The tension detection unit 30 in the parking brake device includes a first plate member 40, a second plate member 50, a coil spring 80, and a tension detection switch 90. Due to the tension generated in the brake cable C, the relative distance between the first plate member 40 and the second plate member 50 is changed against the biasing force of the coil spring 80, and the detection shaft of the tension detection switch 90 is changed. The tension generated in the brake cable C is detected via 92.

  The tension detection unit 30 is configured by assembling components such as the second plate member 50, the coil spring 80, and the tension detection switch 90 to the first plate member 40 (see FIGS. 3 and 4). The 1 plate member 40 cooperates with the 1st locking claw 45 and the 2nd locking hole 46, and the 1st locking hole 13 and the 2nd locking claw 14 which were formed in the lever main-body part 12, The lever body 12 is detachably attached (see FIG. 5). Therefore, according to the parking brake device 1, the tension detection unit 30 can be attached to and detached from the rear end portion of the operation lever 10 via the first plate member 40. The presence or absence of the detection function can be easily changed. That is, according to the parking brake device 1, it is possible to meet the user's desire about whether or not the detection function relating to the tension of the brake cable C is necessary by attaching and detaching the tension detection unit 30. And can contribute to cost reduction.

  In the parking brake device 1, the first plate member 40 has a first locking claw 45 as a first locking portion and a second locking hole 46 as a second locking portion. The first locking portion and the second locking portion are detachable at two positions including the upper surface at the rear end of the operation lever 10 (that is, the positions where the first locking holes 13 and the second locking claws 14 are formed). Fixed. That is, according to the parking brake device 1, the first plate member 40 is locked to the rear end portion of the operation lever 10 in order to lock the first plate member 40 at two positions at the rear end portion of the operation lever 10. In addition, the tension detection unit 30 can be attached to a predetermined position with high accuracy, and the workability during the assembly work of the tension detection unit 30 and the like can be improved.

  In the parking brake device 1, a cylindrical portion 61 is formed in the cable insertion hole 42 of the first plate member 40, and cylinders having different diameters are formed in the cable insertion hole 52 of the second plate member 50. A portion 71 is formed. That is, in the parking brake device 1, the cable insertion hole 42 and the cylinder in the first plate member 40 are inserted by inserting the cylindrical portion 61 of the first plate member 40 into the cylindrical portion 71 of the second plate member 50. Alignment of the portion 61 with the center of the cable insertion hole 52 and the cylindrical portion 71 in the second plate member 50 is possible, and workability when the brake cable C is disposed can be improved.

  Further, when the second plate member 50 slides relative to the first plate member 40, the tip of the cylindrical portion 71 can be brought into contact with the periphery of the cable insertion hole 42. It can prevent that the space | interval with the 2 plate member 50 becomes less than predetermined. Then, according to the parking brake device 1, the distance between the first plate member 40 and the second plate member 50 is prevented from becoming less than a predetermined value, so that it is excessive with respect to the detection shaft 92 of the tension detection switch 90. It is possible to prevent the pressing load from acting, and the failure of the tension detection switch 90 and the tension detection unit 30 can be suppressed.

  In the parking brake device 1, the first collar member 60 having the cylindrical portion 61 and the flange portion 62 is disposed in the cable insertion hole 42 of the first plate member 40, and the second collar having the cylindrical portion 71 and the flange portion 72. The member 70 is disposed in the cable insertion hole 52 of the second plate member 50. Therefore, when the second plate member 50 slides with respect to the first plate member 40, the load when the tip of the cylindrical portion 71 is brought into contact with the periphery of the cable insertion hole 42 is changed to the periphery of the cable insertion hole 42. And the flange part 62 can receive, and the deformation | transformation in the periphery of the cable penetration hole 42 can be suppressed.

  The tension detection unit 30 is disposed with respect to the parking brake device 1 having the operation lever 10 and the base member 20, and when operating the braking device of the vehicle as the operation lever 10 rotates, the brake cable The tension generated in C can be detected. The tension detection unit 30 includes a first plate member 40, a second plate member 50, a coil spring 80, and a tension detection switch 90. The tension detection unit 30 is generated in the brake cable C as the operation lever 10 rotates. By changing the relative distance between the first plate member 40 and the second plate member 50 against the urging force of the coil spring 80 by the tension, and via the detection shaft 92 of the tension detection switch 90, It is configured to detect the tension generated in the brake cable C.

  The tension detection unit 30 is configured by assembling components such as the second plate member 50, the coil spring 80, and the tension detection switch 90 to the first plate member 40 (see FIGS. 3 and 4). The first plate member 40 causes the first locking claw 45 and the second locking hole 46 to cooperate with the first locking hole 13 and the second locking claw 14 formed in the lever main body 12. Thus, it is detachably attached to the lever main body 12 (see FIG. 5).

  Therefore, according to the tension detection unit 30, it can be attached to and detached from the rear end portion of the operation lever 10 in the parking brake device 1 via the first plate member 40, so that the detection related to the tension of the brake cable C can be performed. Functions can be easily added. That is, according to the tension detection unit 30, it is possible to meet the user's desire about whether or not the detection function related to the tension of the brake cable C is necessary by attaching / detaching the tension detection unit 30 to / from the parking brake device 1.

  In the tension detection unit 30, the first plate member 40 has a first locking claw 45 as a first locking portion and a second locking hole 46 as a second locking portion. The first locking portion and the second locking portion are detachable at two positions including the upper surface at the rear end of the operation lever 10 (that is, the positions where the first locking holes 13 and the second locking claws 14 are formed). Fixed. That is, according to the tension detection unit 30, the first plate member 40 is locked to the rear end portion of the operation lever 10 in order to lock the first plate member 40 at two positions at the rear end portion of the operation lever 10. In addition, the tension detection unit 30 can be accurately attached to a predetermined position, and the workability of the assembly work of the tension detection unit 30 and the like can be improved.

(Second Embodiment)
Next, a schematic configuration of the parking brake device 1 according to an embodiment (second embodiment) different from the first embodiment described above will be described in detail with reference to FIG. The parking brake device 1 according to the second embodiment relates to the first embodiment described above except for the configuration of the lever main body 12 in the operation lever 10 and the configuration of the first plate member 40 related to the tension detection unit 30. The parking brake device 1 has the same configuration. Therefore, in the following description, the description of the same configuration as that of the first embodiment is omitted, and a different configuration will be described in detail.

(Schematic configuration of the parking brake device according to the second embodiment)
As in the first embodiment, the parking brake device 1 according to the second embodiment includes an operation lever 10 and a base member 20, and is rotatably disposed on a base member 20 fixed to the vehicle. A parking brake can be actuated and released via a brake cable C by rotating the provided operating lever 10 by a driver.

  As shown in FIG. 6, also in the parking brake device 1 according to the second embodiment, the tension detection unit 30 is detachably disposed with respect to the rear portion of the operation lever 10. The tension detection unit 30 detects the tension generated in the brake cable C when the parking brake is operated / released.

  The operation lever 10 according to the second embodiment is a main component that is rotated by the driver in the parking brake device 1, and includes a grip portion 11 and a lever main body portion 12. .

  As in the first embodiment, the lever main body portion 12 has a first locking hole 13 that is used when the tension detection unit 30 is detachably attached to the operation lever 10. The first locking hole 13 is formed in the rear end portion on the upper surface of the lever main body 12, and the first locking claw 45 of the first plate member 40 constituting the tension detection unit 30 is locked ( (See FIG. 6). The lever main body 12 according to the second embodiment is different from the lever main body 12 according to the first embodiment in that the second locking claw 14 does not protrude from the rear end portion on the right side surface. (See FIGS. 5 and 6).

(Specific Configuration of Tension Detection Unit According to Second Embodiment)
Next, a specific configuration of the tension detection unit 30 according to the second embodiment will be described in detail with reference to the drawings. Also in the second embodiment, the tension detection unit 30 is a unit for detecting the tension generated in the brake cable C in order to operate and release the parking brake. As shown in FIG. Removably attached to the rear end.

  The tension detection unit 30 according to the second embodiment includes a first plate member 40, a second plate member 50, a coil spring 80, and a tension detection switch 90, as in the first embodiment. The one end part of the brake cable C is connected. When the tension detection unit 30 moves rearward in the parking brake device 1 due to the operation lever 10, the tension detection unit 30 is cooperated by the second plate member 50 to which the end of the brake cable C is connected and the coil spring 80. The second plate member 50 moves forward at, and the brake cable C is pulled backward.

  Thereby, in the said parking brake apparatus 1, the braking state which the braking force generate | occur | produced in the vehicle by the parking brake is brought about. The tension detection switch 90 detects the tension generated in the brake cable C as the position of the second plate member 50 with respect to the first plate member 40 of the tension detection unit 30 changes.

  As shown in FIG. 6, the first plate member 40 according to the second embodiment is made of a metal plate material, and includes a plate body portion 41, a switch mounting portion 44, and a first locking claw 45. ing. The first plate member 40 according to the second embodiment is different from the first plate member 40 according to the first embodiment in that the second locking hole 46 is not formed on the lower right side of the cable insertion hole 42 in the plate main body 41. This is different from the plate member 40 (see FIGS. 5 and 6).

  The first locking claw 45 according to the second embodiment is formed at the upper left edge of the plate body 41 and cooperates with the first locking hole 13 formed in the upper surface of the lever body 12. The first plate member 40 is detachably fixed to the operation lever 10. The first locking claw 45 is formed to extend upward from the left upper end edge of the plate main body 41 and then extend downward slightly forward of the surface of the plate main body 41. Accordingly, the first locking member 45 can be caused to enter the first locking hole 13 from above by hooking the first plate member 40 on the rear end portion of the operation lever 10. Can be detachably attached to the rear end of the lever main body 12.

  As shown in FIG. 6, a retaining portion 45 </ b> A is formed at the tip of the first locking claw 45 according to the second embodiment. The retaining portion 45A faces the front end of the substantially flat plate-shaped first locking claw 45 extending downward slightly forward from the surface of the plate body 41 toward the front (ie, away from the surface of the plate body 41). It is formed by bending. The retaining portion 45A formed at the tip of the first locking claw 45 moves the first plate member 40 and the tension detection unit 30 attached to the operation lever 10 in a straight line in one direction (for example, simply upward). Only the contact with the first locking hole 13 of the operation lever 10 functions as a retaining for the first plate member 40 and the tension detection unit 30.

  In the second embodiment, the first plate member 40 and the tension detection unit 30 are rotated from the rear end portion of the operation lever 10 so as to be pulled up around the first locking hole 13 and the first locking claw 45. Then, the first plate member 40 and the tension detection unit 30 can be detached from the operation lever 10 without being blocked by the retaining portion 45A.

(Attaching work of the tension detection unit according to the second embodiment)
Next, attachment work when attaching the tension detection unit 30 according to the second embodiment to the rear part of the lever main body 12 in the operation lever 10 will be described with reference to the drawings.

  Also in the tension detection unit 30 in the second embodiment, the first plate member 40 is integrated with the first collar member 60 and the tension detection switch 90, as in the first embodiment. The second plate member 50 is also integrated with the second collar member 70 and the operating bolt 56, as in the first embodiment.

  Also in the second embodiment, the coil spring 80 is disposed between the first plate member 40 and the second plate member 50 to which the constituent members are respectively attached, and at the same time, the second plate member with respect to the first plate member 40. 50 is assembled. At this time, in a state where the cylindrical portion 61 of the first plate member 40 is inserted from the front end side of the coil spring 80 and the cylindrical portion 71 of the second plate member 50 is inserted from the rear end side of the coil spring 80, the slit 43 A holding member 54 is attached to the tip end of the plate guide piece 53 inserted through. Thereby, the relative positional relationship between the first plate member 40 and the second plate member 50 to which the constituent members are attached and the coil spring 80 is fixed, and the tension detection unit 30 can be unitized.

  Also in the tension detection unit 30 according to the second embodiment, the cylindrical portion 61 of the first plate member 40 is inserted into the cylindrical portion 71 of the second plate member 50 when inserted into the coil spring 80. Thereby, about the cable insertion hole 42 of the 1st plate member 40, the cylindrical part 61 of the 1st color member 60, the cable insertion hole 52 of the 2nd plate member 50, and the cylindrical part 71 of the 2nd collar member 70, All axes can be easily aligned.

  When the unitized tension detection unit 30 according to the second embodiment is attached to the rear end portion of the lever main body 12, the retaining portion 45 </ b> A of the first locking claw 45 enters the first locking hole 13. Thus, the first locking claw 45 of the first plate member 40 is hooked into the first locking hole 13 formed on the upper surface of the lever main body 12 (see FIG. 6). According to the parking brake device 1, the tension detection unit 30 can be attached to a predetermined position at the rear end portion of the lever main body 12 by a simple operation of locking by the first locking claws 45 or the like.

  Also in the second embodiment, since the tension detection unit 30 is unitized, the positional relationship of other components of the tension detection unit 30 with respect to the first plate member 40 is also determined. That is, by fixing the first plate member 40 at a predetermined position at the rear end of the lever main body 12, the tension detection unit 30 can be accurately attached at a predetermined position at the rear end of the lever main body 12.

  Next, in the parking brake device 1 according to the second embodiment, an operation of removing the tension detection unit 30 from the rear part of the lever main body 12 will be described in detail with reference to the drawings. In this case, the operator removes the brake cable C from the tension detection unit 30 and then attaches the tension detection unit 30 attached to the rear end of the lever main body 12 to the first locking hole 13 and the first locking. It lifts while rotating so that it may pull up on the nail | claw 45 as a center.

  By lifting the tension detection unit 30 according to the second embodiment while rotating in this manner, the first locking claw 45 is pulled out from the first locking hole 13 without being blocked by the locking portion 45A. become. As described above, in the second embodiment, the tension detecting unit 30 is lifted while being rotated, so that the locking by the first locking claw 45 or the like can be released, and the lever main body 12 can be easily operated. The tension detection unit 30 can be removed from the rear part.

  As described above, the parking brake device 1 according to the second embodiment includes the operation lever 10, the base member 20, and the tension detection unit 30, and rotates the operation lever 10 around the rotation shaft 25. When it is moved, the brake device of the vehicle can be operated by pulling the brake cable C. Further, the parking brake device 1 is configured to detect the tension generated in the brake cable C by the tension detection unit 30 as the operation lever 10 rotates.

  The tension detection unit 30 according to the second embodiment includes a first plate member 40, a second plate member 50, a coil spring 80, and a tension detection switch 90, as in the first embodiment. Yes. The tension detection unit 30 is configured so that the first plate member 40 and the second plate member 50 are opposed to each other against the urging force of the coil spring 80 due to the tension generated in the brake cable C as the operation lever 10 rotates. The tension generated in the brake cable C is detected via the detection shaft 92 of the tension detection switch 90 by changing the general distance.

  The tension detection unit 30 is configured by assembling components such as the second plate member 50, the coil spring 80, and the tension detection switch 90 with respect to the first plate member 40. The first plate member 40 includes the first plate member 40 and the first plate member 40. By inserting the locking claw 45 into the first locking hole 13 formed in the lever main body 12, the locking claw 45 is detachably attached to the lever main body 12 (see FIG. 6).

  That is, according to the parking brake device 1 according to the second embodiment, the first locking claw 45 is simply inserted into or removed from the first locking hole 13 in the lever main body 12 of the operation lever 10. By performing the work, the first plate member 40 and the tension detection unit 30 can be attached and detached at predetermined positions. Thereby, according to the said parking brake apparatus 1, while improving the workability | operativity at the time of the assembly | attachment operation | work of the tension | tensile_strength detection unit 30 grade | etc., It is easy for the user's request about the necessity of the detection function which concerns on the tension | tensile_strength of the brake cable C. It can respond quickly and can contribute to the convenience and cost reduction of the parking brake device 1.

  Further, in the parking brake device 1 according to the second embodiment, the first plate member 40 and the tension detection are provided because the first plate member 40 has the retaining portion 45A at the tip of the first locking claw 45. The unit 30 is not inadvertently detached, the state having a detection function relating to the tension of the brake cable C can be maintained, and the user's intention can be reflected.

  Also in the second embodiment, a cylindrical portion 61 is formed in the cable insertion hole 42 of the first plate member 40, and cylinders having different diameters are formed in the cable insertion hole 52 of the second plate member 50. A portion 71 is formed. That is, in the parking brake device 1, the cable insertion hole 42 and the cylinder in the first plate member 40 are inserted by inserting the cylindrical portion 61 of the first plate member 40 into the cylindrical portion 71 of the second plate member 50. Alignment of the portion 61 with the center of the cable insertion hole 52 and the cylindrical portion 71 in the second plate member 50 is possible, and workability when the brake cable C is disposed can be improved.

  In this case as well, when the second plate member 50 slides relative to the first plate member 40, the tip of the cylindrical portion 71 can be brought into contact with the periphery of the cable insertion hole 42. It can prevent that the space | interval of the plate member 40 and the 2nd plate member 50 becomes less than predetermined. Accordingly, the parking brake device 1 can prevent an excessive pressing load from acting on the detection shaft 92 of the tension detection switch 90, and can suppress failure of the tension detection switch 90 and the tension detection unit 30.

  Also in the parking brake device 1, the first collar member 60 having the cylindrical portion 61 and the flange portion 62 is disposed in the cable insertion hole 42 of the first plate member 40, and the second collar portion 71 and the second flange portion 72 are provided. The collar member 70 is disposed in the cable insertion hole 52 of the second plate member 50. Therefore, when the second plate member 50 slides with respect to the first plate member 40, the load when the tip of the cylindrical portion 71 is brought into contact with the periphery of the cable insertion hole 42 is changed to the periphery of the cable insertion hole 42. And the flange part 62 can receive, and the deformation | transformation in the periphery of the cable penetration hole 42 can be suppressed.

  Similar to the first embodiment, the tension detection unit 30 according to the second embodiment is disposed with respect to the parking brake device 1 having the operation lever 10 and the base member 20, and as the operation lever 10 rotates. Thus, the tension generated in the brake cable C can be detected when operating the braking device of the vehicle. The tension detection unit 30 includes a first plate member 40, a second plate member 50, a coil spring 80, and a tension detection switch 90. The tension detection unit 30 is configured so that the first plate member 40 and the second plate member 50 are opposed to each other against the urging force of the coil spring 80 due to the tension generated in the brake cable C as the operation lever 10 rotates. When the actual distance changes, the tension generated in the brake cable C is detected via the detection shaft 92 of the tension detection switch 90.

  In the tension detection unit 30 according to the second embodiment, as in the first embodiment, components such as the second plate member 50, the coil spring 80, and the tension detection switch 90 are assembled to the first plate member 40. The first plate member 40 is inserted into the first locking hole 13 formed in the lever body 12 by inserting the first locking claw 45 into the lever body 12. Removably attached (see FIG. 6).

  That is, according to the tension detection unit 30 according to the second embodiment, the first locking claw 45 is simply inserted into or removed from the first locking hole 13 in the lever main body portion 12 of the operation lever 10. By performing the work, it can be attached to and detached from the rear end portion of the operation lever 10 in the parking brake device 1 via the first plate member 40, so that a detection function relating to the tension of the brake cable C can be easily added. can do. That is, according to the tension detection unit 30, it is possible to meet the user's desire about whether or not the detection function related to the tension of the brake cable C is necessary by attaching / detaching the tension detection unit 30 to / from the parking brake device 1.

  In addition, in the tension detection unit 30 according to the second embodiment, the first plate member 40 and the tension detection unit 45A have the retaining portion 45A at the tip of the first locking claw 45 in the first plate member 40. The unit 30 is not inadvertently detached from the lever main body 12, and the state having a detection function related to the tension of the brake cable C can be maintained, and the user's intention can be reflected.

  Although the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. For example, in the first embodiment, the second locking claw 14 is formed on the right side surface portion of the rear end portion of the operation lever 10, and the second locking hole is formed in the plate body portion 41 of the first plate member 40. 46 is formed. Regarding the formation position of the second locking claw 14 at the rear end portion of the operation lever 10 and the formation position of the second locking hole 46 in the first plate member 40, If the plate member 40 side respond | corresponds mutually, it will not be limited to this aspect. About the 2nd latching | locking part in this invention, it is not limited to embodiment mentioned above, If it is a position different from a 1st latching | locking part, it can form in a various position.

  Moreover, the shape of each structural member which comprises the parking brake apparatus and tension | tensile_strength detection unit which concerns on this invention is not limited to the shape in embodiment mentioned above, etc., It changes suitably in the range which does not deviate from the meaning of this invention. be able to.

DESCRIPTION OF SYMBOLS 1 Parking brake apparatus 10 Operation lever 13 1st latching hole 14 2nd latching claw 20 Base member 25 Rotating shaft 30 Tension detection unit 40 1st plate member 42 Cable penetration hole 44 Switch attachment part 45 1st latching claw 46 Second locking hole 50 Second plate member 52 Cable insertion hole 55 Bolt support portion 56 Operating bolt 60 First collar member 61 Cylindrical portion 62 Flange portion 70 Second collar member 71 Cylindrical portion 72 Flange portion 80 Coil spring 90 Tension detection Switch 92 Detection axis C Brake cable

Claims (8)

A base member fixed to the vehicle body;
An operation lever that is pivotally supported with respect to the base member via a rotation shaft, and that operates a braking device of the vehicle by pulling a cable when rotated around the rotation shaft;
A tension detecting unit that detects a tension generated in the cable as the operating lever rotates, and a parking brake device having:
The tension detection unit is
A switch mounting portion to which a detection switch for detecting a tension generated in the cable is mounted; and a first cable insertion hole inserted by the cable extending from the braking device; and the rotation of the operation lever. A first plate member that is detachably attached to the shaft side with a claw-shaped first locking portion ;
A second cable insertion hole that is inserted by the cable that has been inserted through the first plate member, and an operating portion that can contact the detection shaft of the detection switch disposed in the switch mounting portion, and A second plate member slidably attached to the first plate member;
A detecting shaft that is displaced when a relative distance between the switch mounting portion of the first plate member and the operating portion of the second plate member is a predetermined value or less; Based on the detection switch for detecting the tension generated in the cable,
A parking brake device comprising: an elastic member disposed between the first plate member and the second plate member and generating an urging force against a tension generated in the cable. The first locking portion is
The parking brake device according to claim 1, wherein the parking brake device is inserted into a locking hole opened on an upper surface of the operation lever on the rotating shaft side. The first plate member is
The parking brake device according to claim 2, further comprising a second locking portion that is locked to a position different from the first locking portion on the rotation shaft side of the operation lever. The first locking portion is
4. The parking brake device according to claim 2, wherein a leading end portion inserted into the locking hole has a retaining portion extending in a direction intersecting with the leading end portion. 5. A first cylindrical portion extending toward the second plate member side is formed in the first cable insertion hole of the first plate member,
The second cable insertion hole of the second plate member is formed with a second cylindrical portion that extends toward the first plate member and has a diameter different from that of the first cylindrical portion of the first plate member. The parking brake device according to any one of claims 1 to 4, wherein the parking brake device is provided. The first cylindrical part or the second cylindrical part is
A collar member having a cylindrical portion formed in a cylindrical shape and a flange portion formed to protrude radially outward at an end portion of the cylindrical portion is formed in the first cable insertion hole or the second cable insertion hole. The parking brake device according to claim 5, wherein the parking brake device is arranged. A base member fixed to a vehicle body, and a vehicle braking device that is pivotally supported via a pivot shaft with respect to the base member and pulls a cable when pivoted around the pivot shaft. A tension detection unit that is disposed in a parking brake device having an operation lever that detects the tension generated in the cable as the operation lever rotates.
The tension detection unit is
A switch mounting portion to which a detection switch for detecting a tension generated in the cable is mounted; and a first cable insertion hole inserted by the cable extending from the braking device; and the rotation of the operation lever. A first plate member that is detachably attached to the shaft side with a claw-shaped first locking portion ;
A second cable insertion hole that is inserted by the cable that has been inserted through the first plate member, and an operating portion that can contact the detection shaft of the detection switch disposed in the switch mounting portion, and A second plate member slidably attached to the first plate member;
A detecting shaft that is displaced when a relative distance between the switch mounting portion of the first plate member and the operating portion of the second plate member is a predetermined value or less; Based on the detection switch for detecting the tension generated in the cable,
A tension detecting unit, comprising: an elastic member disposed between the first plate member and the second plate member and generating an urging force against the tension generated in the cable. The first locking portion is
The tension detection unit according to claim 7, wherein the tension detection unit is inserted into a locking hole opened on an upper surface of the operation lever on the rotating shaft side.

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